Up-conversion luminescence in colloidal CdTe nanocrystals

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)22_Publication in policy or professional journal

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Author(s)

  • S. A. Filonovich
  • M. J M Gomes
  • Yu P. Rakovich
  • J. F. Donegan
  • D. V. Talapin
  • N. P. Gaponik
  • A. Eychmüller

Detail(s)

Original languageEnglish
Pages (from-to)157-162
Journal / PublicationMaterials Research Society Symposium - Proceedings
Volume737
Publication statusPublished - 2003
Externally publishedYes

Conference

TitleQuantum Confined Semiconductor Nanostructures
PlaceUnited States
CityBoston MA
Period2 - 5 December 2002

Abstract

We report on the efficient photoluminescence up-conversion in colloidally synthesized CdTe nanocrystals. We demonstrate that the efficiency of photon energy up-conversion and magnitude of spectral shift can be controlled: (i) by the size of the nanocrystals: (ii) by the temperature dependence of the excited state absorption coefficient; (iii) by the dependence on excitation intensity. From the analysis of the experimental data we can suggest that intrinsic gap states are involved as intermediate states in the photoluminescence up-conversion rather than nonlinear two-photon absorption or Auger processes.

Citation Format(s)

Up-conversion luminescence in colloidal CdTe nanocrystals. / Filonovich, S. A.; Gomes, M. J M; Rakovich, Yu P. et al.
In: Materials Research Society Symposium - Proceedings, Vol. 737, 2003, p. 157-162.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)22_Publication in policy or professional journal